Ppx_obus (p.obus.1.2.1.doc.ppx_obus.Ppx

val rewriter_name : string

val raise_errorf : 
  ?sub:Location.msg list ->
  ?loc:Location.t ->
  ('a, unit, string, 'b) Stdlib.format4 ->
  'a

val find_attr_expr : 
  string ->
  Migrate_parsetree.Ast_408.Parsetree.attribute list ->
  Migrate_parsetree.Ast_408.Parsetree.expression option

val register_obus_exception : 
  Migrate_parsetree.Ast_408.Parsetree.structure_item ->
  Migrate_parsetree.Ast_408.Parsetree.structure_item option

val obus_mapper : Migrate_parsetree.Ast_408.Ast_mapper.mapper